LC7421-E4 25.4 mm Dia. ZnSe Plano-Concave Lens; EFL=-75mm 2-13µm

The LC7421-E4 is a 25.4 mm diameter ZnSe plano-concave lens, designed for use in the infrared spectrum with a wavelength of 10600 nm. This lens is sourced from Thorlabs, a leading vendor in the optical components industry, and is available for immediate purchase.

The lens features a negative focal length (EFL) of -75 mm, making it suitable for a variety of applications that require light to be focused or diverged. The plano-concave design, where one surface is flat and the other is curved, allows for precise control over the light path.

The lens is made from ZnSe (Zinc Selenide), a material known for its excellent optical properties in the infrared spectrum. It has a high refractive index and a low dispersion, making it ideal for applications that require high precision and low distortion.

The LC7421-E4 is coated with tho e4znsearc2000130 on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission in the infrared spectrum.

The lens has a center thickness of 2 mm and a clear aperture, making it suitable for use with a wide range of optical systems. The inner and outer radii are 0, indicating a sharply curved surface that provides excellent light bending capabilities.